Presentation on theme: "GERMPLASM EVALUATION PROGRAM U.S. MEAT ANIMAL RESEARCH CENTER"— Presentation transcript:
1GERMPLASM EVALUATION PROGRAM U.S. MEAT ANIMAL RESEARCH CENTER ARS, USDAClay Center, NECow (G = Grey) Charolais X Angus cow and calf nursing is“Cow in middle is probably (RBF) Hereford X MARC III with calf nursing
2SIRE BREEDS USED TO PRODUCE FI CROSSES WITH ANGUS AND HEREFORD DAMS IN THE GERMPLASM EVALUATION PROGRAM AT MARCaCycle I Cycle II Cycle III Cycle IV Cycle V Cycle VI Cycle VII Cycle VIIIHereford Hereford Hereford Hereford Hereford Hereford Hereford HerefordAngus Angus Angus Angus Angus Angus Angus AngusJersey Red Poll Brahman Longhorn Tuli Wagyu Red Angus BeefmasterS. Devon Braunvieh Sahiwal Salers Boran Norweg. Red Limousin BrangusLimousin Gelbvieh Pinzgauer Galloway Belg. Blue Sw. Red&Wh. Charolais BonsmaraSimmental Maine Anj. Tarentaise Nellore Brahman Friesian Simmental RomosinuanoCharolais Chianina Shorthorn Piedmontese GelbviehPiedmonteseCharolaisGelbvieh PinzgauerF1 cross progeny of 33 sire breeds have been characterized in a series of long term experiments we have called cycles. HA crosses have been produced in each cycle to provide a reference point for pooling data over all cycles. In general, we have produced about 200 progeny per breed sire in each cycle using about 20 to 25 sires per breed in each cycle.Today, I will summarize results from cycle VIII of this program, which has Beefmaster, Brangus, Bonsmara from S. Africa,and Romosinuano from S. America (Colombia via Venzuela)..seven most prominent Bos taurus breeds in North America. I shall also briefly summarize results from cycle VII involving the seven most prominent Bos taurus beef breeds in the U.S.H, A, Ra, L, C, S, G,The F1 calves produced in 1999, 2000.22 sires of each breed were used,½ young herd sire prospects,½ top 50 in registrationsRe-evaluation of 6 breeds first evaluated in Cycle I and II of the program in the early 1970’s, Ra evaluated for the first time.aSire breeds mated to Angus and Hereford females, Composite MARC III(1/4 Angus, Hereford, Red Poll and Pinzgauer) cows were also included inCycles V, VI, and VII.
3BEEF BREED REGISTRATIONS National Pedigreed Livestock Council, 2003-2004 %Angus281,96540.0Brahman11,0001.6Hereford69,3169.8Salers10,2861.5Charolais55,0347.8Santa Gertrudis7,5001.1Limousin49,6007.0Longhorn7,459Simmental45,0006.4Chianina6,679.9Red Angus42,1786.0Braunvieh4,100.6Gelbvieh31,6644.5Corriente3,211.5Shorthorn22,4303.2Tarentaise1,600.2Brangus22,311Highland1,500Beefmaster21,2423.0Pinzgauer664.1Maine Anjou12,5442.2TOTAL707,283100Registrations provide some insight into gene flow or relative influence of different breeds in beef industryBritish 59%, up in last few years from about 50% in 1998, Angus gaining most ground 40 up from 33%.Continental 31%, down from about 33% in 1998.American (Brahman and Brahman influenced breeds) 8.7%, down from about 15% in 1998.
4BREED GROUP MEANS FOR PREWEANING TRAITS OF CALVES PRODUCED IN CYCLE VII OF THE GPE PROGRAM ( CALF CROP)No. Calvings Calv Birth dSire breed calves unassist. diff wt. wn. wt.,of calf born % score lb lb.HerefordAngusRed AngusSimmentalGelbviehLimousinCharolaisLSD <
5SIRE BREED MEANS FOR FINAL WEIGHT AND CARCASS TRAITS OF F1 STEERS (445 DAYS)Final Retail USDA WBSire wt product Choice shearBreed N lb % lb % lbHerefordAngusRed AngusSimmentalGelbviehLimousinCharolaisLSD <
6SIRE BREED LEAST SQUARES MEANS FOR GROWTH AND PUBERTY TRAITS OF HEIFERS IN CYCLE VII OFTHE GPE PROGRAM ( CALF CROPs)400-d wt. month Frame Age Preg.Sire breed wt wt ht score at rateof female No lb lb cm sc pub %HerefordAngusRed AngusSimmentalGelbviehLimousinCharolaisLSD <
7SIRE BREED MEANS FOR REPRODUCTION AND MATERNAL TRAITS OF F1 FEMALES MATED TO PRODUCE THEIR FIRST CALVES AT 2 YEARS OF AGE (2001 & 2002)Surv.Sire Calf crop Calving Unassist. Birth to d wt perbreed born wnd. diff births wt. wn. calf cow expof female No % % score % lb % lb lbHerefordAngusRed AngusSimmentalGelbviehLimousinCharolaisLSD <
8Genomics Populations (Cycle VII) Seven most prominent breeds (A, H, Ra, G, S, C, L).22 sires per breed produce F1 progeny at MARCFour heavily used bulls/breed producing F1 bullsF1 bulls mated to F1 females will produce grand progeny with large family sizeIidentify and validate QTL and favorable alleles in populations directly tied to industryIncorporate into EPDs using multi-loci/multi-trait genetic prediction (Thallman, Hanford, Van Vleck).
9Hereford, Angus, Red Angus, Simmental, Gelbvieh, Limousin, and Charolais siredtwo-year old femalesCow (G = Grey) Charolais X Angus cow and calf nursing is“Cow in middle is probably (RBF) Hereford X MARC III with calf nursing
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